公开(公告)号：US20240002228A1

公开(公告)日：2024-01-04

申请号：US18254671

申请日：2021-12-14

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Markus E. Hirschberg ,  Kalus Hintzer ,  Thomas W. Schoettle ,  Arne Thaler ,  Achim Schmidt-Rodenkirchen ,  Thorsten Gerdes ,  Konstantin Mierdel

IPC: C01B7/19

CPC classification number: C01B7/196 ,  C01B32/40

Abstract: Methods of converting a variety of fluorinated materials into anhydrous hydrogen fluoride are described. The methods include thermally decomposing the fluorinated materials into a gaseous effluent comprising hydrogen fluoride and carbon dioxide. This gaseous effluent is then treated with carbon at a temperature of at least 830° C., converting the carbon dioxide to carbon monoxide (CO) and producing a gaseous product comprising the hydrogen fluoride, which can be condensed to generate anhydrous hydrogen fluoride. These methods can also be used to convert water contained in the gaseous effluent into hydrogen.

公开(公告)号：US20230279192A1

公开(公告)日：2023-09-07

申请号：US17925672

申请日：2021-06-08

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Gregg D. Dahlke ,  Denis Duchesne ,  Klaus Hintzer ,  Mark W. Muggli ,  Thomas W. Schoettle ,  Arne Thaler

IPC: C08J11/08 ,  H01M8/008 ,  H01M8/1039 ,  H01M8/1086

CPC classification number: C08J11/08 ,  H01M8/008 ,  H01M8/1039 ,  H01M8/1086 ,  C08J2327/12 ,  H01M2008/1095

Abstract: The process is described for recycling a heat-treated solid article including a fluorinated polymer having a fluorinated polymer backbone chain and a plurality of groups represented by formula —SO3Z, wherein Z is independently a hydrogen, an alkali-metal cation, or a quaternary ammonium cation. The heat-treated solid article was previously heated at a temperature of at least 100° C. The process includes heating the heat-treated solid article in the presence of water and base to form a fluorinated polymer salt solution, allowing the fluorinated polymer salt solution to cool, and converting the fluorinated polymer salt solution to fluorinated polymer solution wherein Z is hydrogen by cation exchange.

公开(公告)号：US11905178B2

公开(公告)日：2024-02-20

申请号：US18254671

申请日：2021-12-14

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Markus E. Hirschberg ,  Klaus Hintzer ,  Thomas W. Schoettle ,  Arne Thaler ,  Achim Schmidt-Rodenkirchen ,  Thorsten Gerdes ,  Konstantin Mierdel

IPC: C01B7/19 ,  C01B32/50 ,  C01B32/40

CPC classification number: C01B7/196 ,  C01B32/40 ,  C01B32/50

Abstract: Methods of converting a variety of fluorinated materials into anhydrous hydrogen fluoride are described. The methods include thermally decomposing the fluorinated materials into a gaseous effluent comprising hydrogen fluoride and carbon dioxide. This gaseous effluent is then treated with carbon at a temperature of at least 830° C., converting the carbon dioxide to carbon monoxide (CO) and producing a gaseous product comprising the hydrogen fluoride, which can be condensed to generate anhydrous hydrogen fluoride. These methods can also be used to convert water contained in the gaseous effluent into hydrogen.